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Printed microfluidic filter for heparinized blood.

Stanley E R Bilatto, Nouran Y Adly1, Daniel S Correa

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Summary
This summary is machine-generated.

A novel 3D-printed microfluidic device enables rapid blood plasma separation without dilution. This lab-on-a-chip technology uses auto-filtration for efficient point-of-care diagnostics.

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Area of Science:

  • Biomedical Engineering
  • Microfluidics
  • Rapid Prototyping

Background:

  • Traditional blood plasma separation methods can be time-consuming and require sample dilution, potentially affecting diagnostic accuracy.
  • Existing microfluidic devices often require external forces for sample manipulation, limiting their portability and ease of use.

Purpose of the Study:

  • To develop a simple, efficient, and integrated lab-on-a-chip method for blood plasma separation.
  • To create a microfluidic device using 3D printing that eliminates the need for sample dilution and external driving forces.

Main Methods:

  • Stereolithographic 3D printing and inkjet printing were combined to fabricate a sealed microfluidic device.
  • A capillary effect and auto-filtration mechanism, utilizing crystal formation in stored blood, were employed for plasma separation.
  • The device processed a small volume (8 μl) of heparinized whole blood.

Main Results:

  • Efficient plasma separation from whole blood was achieved in under 10 seconds.
  • The auto-filtration structures, with pores smaller than red blood cells, effectively separated plasma without dilution.
  • The developed microfluidic device demonstrated a miniaturized, fast, and user-friendly operation.

Conclusions:

  • The 3D-printed microfluidic device offers a novel approach to rapid blood plasma separation.
  • This technology facilitates point-of-care diagnostics by enabling easy integration into portable healthcare systems.
  • The method avoids sample dilution and external forces, enhancing diagnostic reliability and usability.